Question: For a repeated-measures study comparing two treatments with a sample of n = 9 participants, a researcher obtains a sample mean difference is MD =

For a repeated-measures study comparing two treatments with a sample of n = 9 participants, a researcher obtains a sample mean difference is MD = 5 with SS = 288 for the difference scores. What is the repeated-measures t statistic for these data?

a. 5

b. 2.5

c. 1.25

d. 0.83

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